import time
from datetime import datetime, timedelta
from flask import render_template, request, jsonify, current_app, redirect, url_for, session, g, abort
from info import constants, db
from info.models import User, News, Category
from info.modules.admin import admin_blu
from info.utils.common import user_login_data
from info.utils.image_storage import storage
from info.utils.response_code import RET


@admin_blu.route('/news_type', methods=["POST", "GET"])
def news_type():
    if request.method == "GET":
        try:
            categories = Category.query.all()
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_type.html', errmsg="数据查询错误")
        category_dict_li = []
        for category in categories:
            category_dict_li.append(category.to_dict())
        category_dict_li.pop(0)
        data = {"category_dict_li": category_dict_li}
        return render_template('admin/news_type.html', data=data)
    # 如果是POST请求，代表是新增或者编辑分类
    cname = request.json.get("name")
    cid = request.json.get("id")
    if not cname:
        return jsonify(errno=RET.PARAMERR, errmsg="参数错误")
    # 如果cid有值，代表是编辑现有分类
    if cid:
        try:
            category = Category.query.get(cid)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.DBERR, errmsg="数据查询错误")
        if not category:
            return jsonify(errno=RET.DATAERR, errmsg="未查到该分类信息")
        category.name = cname
        return jsonify(errno=RET.OK, errmsg="OK")
    # 如果cid没有值，则新增新闻分类
    else:
        category = Category()
        category.name = cname
        db.session.add(category)
    return jsonify(errno=RET.OK, errmsg="OK")


@admin_blu.route('/news_edit_detail', methods=["POST", "GET"])
def news_edit_detail():
    """新闻版式编辑"""
    if request.method == "GET":
        news_id = request.args.get("news_id")
        if not news_id:
            abort(404)
        try:
            news_id = int(news_id)
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_edit_detail.html', errmsg="参数错误")
        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_edit_detail.html', errmsg="数据查询错误")
        if not news:
            return render_template('admin/news_edit_detail.html', errmsg="未查询到此新闻")
        try:
            categories = Category.query.all()
        except Exception as e:
            current_app.logger.error(e)
            return render_template('admin/news_edit_detail.html', errmsg="数据查询错误")
        category_dict_li = []
        for category in categories:
            # 取到分类的字典
            cate_dict = category.to_dict()
            # 判断当前遍历到的分类是否是当前新闻的分类，如果是，则添加is_selected为true
            if category.id == news.category_id:
                cate_dict["is_selected"] = True
            category_dict_li.append(cate_dict)
        # 移除最新的分类
        category_dict_li.pop(0)
        data = {"news": news.to_dict(), "category_dict_li": category_dict_li}
        return render_template('admin/news_edit_detail.html', data=data)
    news_id = request.form.get("news_id")
    title = request.form.get("title")
    digest = request.form.get("digest")
    category_id = request.form.get("category_id")
    index_image = request.files.get("index_image")
    content = request.form.get("content")
    if not all([title, digest, category_id, content]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数有误")
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg="数据查询错误")
    if not news:
        return jsonify(errno=RET.DATAERR, errmsg='未查询到此新闻数据')
    # 如果上传了图片，更新图片地址
    if index_image:
        try:
            index_image = index_image.read()
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.PARAMERR, errmsg="参数有误")
        try:
            key = storage(index_image)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.THIRDERR, errmsg="图片保存失败")
        news.index_image_url = constants.QINIU_DOMIN_PREFIX + key
    # 更新新闻数据
    news.title = title
    news.category_id = category_id
    news.digest = digest
    news.content = content
    return jsonify(errno=RET.OK, errmsg='OK')


@admin_blu.route('/news_edit')
def news_edit():
    """
    新闻编辑列表
    :return:
    """
    page = request.args.get('p', 1)
    keywords = request.args.get('keywords', None)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1
    news_list = []
    current_page = 1
    total_page = 1
    filters = [News.status == 0]
    # 输入关键词查询
    if keywords:
        filters.append(News.title.contains(keywords))
    try:
        paginate = News.query.filter(*filters). \
            paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)
        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)
    news_dict_li = []
    for news in news_list:
        news_dict_li.append(news.to_basic_dict())
    data = {
        "news_dict_li": news_dict_li,
        "current_page": current_page,
        "total_page": total_page
    }
    return render_template('admin/news_edit.html', data=data)


@admin_blu.route('/news_review_action', methods=["post"])
def news_review_action():
    """
    审核逻辑
    :return:
    """
    news_id = request.json.get("news_id")
    action = request.json.get("action")
    if not all([news_id, action]):
        return jsonify(errno=RET.PARAMERR, errmsg='参数错误')
    if action not in ["accept", "reject"]:
        return jsonify(errno=RET.PARAMERR, errmsg='参数错误')
    # 查询到新闻数据
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
        return jsonify(errno=RET.DBERR, errmsg='数据查询错误')
    # 如果审核通过
    if action == "accept":
        news.status = 0
    else:
        reason = request.json.get("reason")
        if not reason:
            return jsonify(errno=RET.PARAMERR, errmsg='请输入拒绝原因')
        news.reason = reason
        news.status = -1
    return jsonify(errno=RET.OK, errmsg='OK')


@admin_blu.route('/news_review_detail/<int:news_id>')
def news_review_detail(news_id):
    """新闻审核详情页"""
    news = None
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
        return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})
    data = {"news": news.to_dict() if news else None}
    return render_template('admin/news_review_detail.html', data=data)


@admin_blu.route('/news_review')
def news_review():
    """新闻审核列表"""
    page = request.args.get('p', 1)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1
    news_list = []
    current_page = 1
    total_page = 1
    try:
        paginate = News.query.filter(News.status != 0). \
            order_by(News.create_time.desc()). \
            paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)
        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)
    news_dict_li = []
    for news in news_list:
        news_dict_li.append(news.to_review_dict())
    data = {
        "news_dict_li": news_dict_li,
        "current_page": current_page,
        "total_page": total_page
    }
    return render_template('admin/news_review.html', data=data)


@admin_blu.route('/user_list')
def user_list():
    """用户列表展示"""
    page = request.args.get('p', 1)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1
    users = []
    current_page = 1
    total_page = 1
    try:
        paginate = User.query.filter(User.is_admin == False). \
            order_by(User.last_login.desc()). \
            paginate(page, constants.ADMIN_USER_PAGE_MAX_COUNT, False)
        current_page = paginate.page
        total_page = paginate.pages
        users = paginate.items
    except Exception as e:
        current_app.logger.error(e)
    users_dict_li = []
    for user in users:
        users_dict_li.append(user.to_admin_dict())
    data = {
        "users": users_dict_li,
        "current_page": current_page,
        "total_page": total_page
    }
    return render_template('admin/user_list.html', data=data)


@admin_blu.route('/user_count')
def user_count():
    """
    用户统计逻辑实现
    1.查询用户总人数(非管理员)
    2.统计月新增数 获取到本月第1天0点0分0秒的时间对象，然后查询最后一次登录比其大的所有数据
    3.统计日新增数 获取到当日0点0分0秒时间对象，然后查询最后一次登录比其大的所有数据
    4.遍历每一天的访问量
    :return:
    """
    total_count = 0
    # 获取总人数
    try:
        total_count = User.query.filter(User.is_admin == False).count()
    except Exception as e:
        current_app.logger.error(e)
    mon_count = 0
    # 获取到本月第1天0点0分0秒的时间对象，然后查询最后一次登录比其大的所有数据
    t = time.localtime()
    begin_mon_date_str = '%d-%02d-01' % (t.tm_year, t.tm_mon)
    begin_mon_date = datetime.strptime(begin_mon_date_str, "%Y-%m-%d")
    try:
        mon_count = User.query.filter(User.is_admin == False, User.create_time > begin_mon_date).count()
    except Exception as e:
        current_app.logger.error(e)
    day_count = 0
    # 获取到当日0点0分0秒时间对象，然后查询最后一次登录比其大的所有数据
    begin_day_date_str = '%d-%02d-%02d' % (t.tm_year, t.tm_mon, t.tm_mday)
    begin_day_date = datetime.strptime(begin_day_date_str, "%Y-%m-%d")
    try:
        day_count = User.query.filter(User.is_admin == False, User.create_time > begin_day_date).count()
    except Exception as e:
        current_app.logger.error(e)
    # 定义活跃天数和人数，保存数据
    active_date = []
    active_count = []
    # 取到日访问量的数据

    try:
        for i in range(0, 31):
            begin_date = begin_day_date - timedelta(days=i)
            end_date = begin_day_date - timedelta(days=(i - 1))
            count = User.query.filter(User.is_admin == False, User.last_login >= begin_date,
                                      User.last_login < end_date).count()
            active_date.append(begin_date.strftime("%Y-%m-%d"))
            active_count.append(count)
    except Exception as e:
        current_app.logger.error(e)
    # 反转，让最近的一天显示在最后
    active_date.reverse()
    active_count.reverse()
    data = {
        "total_count": total_count,
        "mon_count": mon_count,
        "day_count": day_count,
        "active_date": active_date,
        "active_count": active_count
    }
    return render_template('admin/user_count.html', data=data)


@admin_blu.route('/index')
@user_login_data
def index():
    user = g.user
    return render_template('admin/index.html', data={"user": user.to_dict()})


@admin_blu.route('/login', methods=['get', 'post'])
def login():
    """
    管理员登录逻辑的实现
    :return:
    """
    if request.method == 'GET':
        # 如果管理员已经登录过，则直接跳转到管理页面
        user_id = session.get("user_id", None)
        is_admin = session.get("is_admin", False)
        if user_id and is_admin:
            return redirect(url_for('admin.index'))
        return render_template('admin/login.html')
    username = request.form.get('username')
    password = request.form.get('password')
    if not all([username, password]):
        return render_template('admin/login.html', errmsg="用户名密码不能为空")
    try:
        user = User.query.filter(User.mobile == username, User.is_admin == True).first()
    except Exception as e:
        current_app.logger.error(e)
        return render_template('admin/login.html', errmsg="用户信息查询失败")
    if not user:
        return render_template('admin/login.html', errmsg="未查询到用户信息")
    if not user.check_passowrd(password):
        return render_template('admin/login.html', errmsg="用户名或密码错误")
    # 判断完成，记录用户登录信息
    session["user_id"] = user.id
    session["nickname"] = user.nick_name
    session["mobile"] = user.mobile
    session["is_admin"] = user.is_admin
    # 跳转到后台管理页
    return redirect(url_for('admin.index'))
